1986) with different histochemical and biomechanical characteristics (Bogduk et al. Both multifidus and erector spinae have distinct superficial and deep portions (Bustami 1986 Macintosh et al. For example, it is generally accepted that injury or disorder of the multifidus frequently results in back pain. From an anatomical viewpoint, the architecture of the back muscles is complex. Here, too, EMG is an important tool.Ī number of issues render EMG recordings from the trunk musculature difficult to obtain and interpret. However, the prevalence of back pain in the general population, and the need to identify ergonomically efficient and safe ways to use back muscles, require that we understand the nature of activation in muscles controlling the trunk. During these kinds of tasks as well as in other activities that might threaten the postural control of the individual and perturb balance, the nervous system implements strategies to activate trunk muscles while performing voluntary movements involving remote muscle groups. The trunk musculature plays an important role in tasks such as lifting and throwing.
EMG is becoming an increasingly useful tool for the diagnosis and treatment of low back pain. Peripheral muscle problems may be one issue atrophy of the multifidus is frequently observed in patients with low back pain (Hides et al. In the United States, for example, back pain accounts for two-thirds of all workers compensation costs. The diagnosis and treatment of low back pain are important issues. This is an excerpt from Research Methods in Biomechanics-2nd Edition by Gordon Robertson,Graham Caldwell,Joseph Hamill,Gary Kamen & Saunders Whittlesey.
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